field

问题 Before you react from the gut, as I did initially, read the whole question please. I know they make you feel dirty, I know we've all been burned before and I know it's not "good style" but, are public fields ever ok? I'm working on a fairly large scale engineering application that creates and works with an in memory model of a structure (anything from high rise building to bridge to shed, doesn't matter). There is a TON of geometric analysis and calculation involved in this project. To

问题 I have noticed that there are times when coding in Java that I have seen fields called by method: System.out.println(object.field); and by class: System.out.println(Class.field); I have not seen any clear distinguishing in my textbooks about what the semantics are for these two cases, and I fear that it is going to be, at least for a noob, a subtle point. My intuition is that the class calling will be used for static fields? Thanks guys. So much con'foo'sion. 回答1: The field Class.field can be

问题 Lets say I have a struct with more than hundred elements with complex names. And I am passing a struct of the struct type described to a function using ref, like this: void Foo(ref mystruct a) { "I want to modify members or fields of struct a, like this: a[0] = 10; a[100] = 11;" } Thanks! 回答1: Maybe you should re-examine your choice of data structure. Perhaps a dictionary would be better suited? 回答2: It's a strange request as you're expecting the order of the fields to be significant , but I

问题 I have two files, and I need to compare the second field from File1 and the first field from File2. If there is a match to print the second field of File2 and the entire line matched from File1 If there is no match to print "NOT FOUND" and the entire Line from File1 File1 \\FILESERV04\PCO;S:\CA\USII ECOM;/FS7_434D/FILESERV04/BUSII;;;;\\FILESERV04\PCO\;467,390,611 Bytes;11,225 ;157 \\FILESERV12\MINE$;S:\CA\Naka;/FS3_434D/FILESERV12/NAKA;;;;\\FILESERV12\MINE$\;0 Bytes;0 ;0 \\FILESERV12\INTEG$;S

问题 I'm using Solr6.2 and wanna update specific field in a document somewhat like that in relational db: update table_a set field_x = filed_x+1; How to acheive that in Solr? Thanks in advance. 回答1: For this to work you'll need to have all fields set as stored, since you can then use Solr's support for Updating Parts of Documents. You can then use the inc command to increment a field in a document: { "id":"mydoc", "popularity":{"inc":20} } Since internally an update is "retrieve document, change

问题 One of the advantage of Github Search v4 (GraphQL) over v3 is that it can selectively pick the fields that we want, instead of always getting them all. However, the problem I'm facing now is how to get certain fields. I tried the online help but it is more convolution to me than helpful. Till now, I'm still unable to find the fields for size, score and open issues for the returned repository(ies). That's why I'm wondering if there is a way to get them all, like Select * in SQL. Thx. 回答1:

问题 Having a little tricky issue with python and mysql. To keep it simple, the following code returns whatever is in the variable 'field', which is a string. Such as 'username' or 'password'. options = [field, userID] entries = cursor.execute('select (?) from users where id=(?)', options).fetchall() print(entries); This code works correctly if I remove the first (?) and just use the actually name (like 'username') instead. Can anyone provide some input? 回答1: Your query is actually formed as:

问题 In my Delphi 2009 application I need to check if a field exists and if it doesn't add it during application execution. I have figured out the test for the field, but cannot get a field to add. I tried this var fld : TStringField; begin if not ADOConnection1.Connected then ADOConnection1.Open; fld := TStringField.Create(tbl); fld.FieldName := 'test'; tbl.Fields.Add(fld); end; But it doesn't work. 回答1: try this fld:= TStringField.Create(tbl); fld.FieldName := 'test'; fld.DisplayLabel := 'test';

问题 I am wanting to override the value that is displayed for a field in the Django admin. The field contains XML and when viewing it in the admin I want to pretty-format it for easy readability. I know how to do reformatting on read and write of the field itself, but this is not what I want to do. I want the XML stored with whitespace stripped and I only want to reformat it when it is viewed in the admin change form. So my question is, how can I control the value displayed in the textarea of the

问题 I have defined dynamic field in ApacheSolr: I use it to store products features like: color_feature, diameter_feature, material_feature and so on. Number of those fields are not constant becouse products are changing. Is it possible to get facet result for all those dynamic fields with the same query or do I need to write always all fields in a query like ... facet.field=color_feature&facet.field=diameter_feature&facet.field=material_feature&facet.field= ... 回答1: Solr currently does not